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Observer design for a class of nonlinear systems subject to unknown inputs
Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering, Signals and Systems.
Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering, Signals and Systems.
2014 (English)In: 2014 European Control Conference (ECC), June 24-27, 2014. Strasbourg, France, Piscataway, NJ: IEEE Communications Society, 2014, 970-974 p., 6862555Conference paper (Refereed)
Abstract [en]

We consider a novel method to design an observer for a class of nonlinear discrete-time systems with unknown inputs. Based on Lyapunov functional, we derive a sufficient condition for existence of the designed observer which requires solving a nonlinear matrix inequality. In light of linear algebra, the achieved condition will be formulated in terms of linear matrix inequality (LMI) that can be solved by popular methods easily. Compared to recent researches, the developed approach shows a significant better performance than other techniques previously published in literature and is less conservative in terms of Lipschitz constant. Finally, the proposed observer is illustrated by implementing the proposed method on a single- link flexible manipulator and the results are compared to some recent similar researches in terms of performance and conservativeness.

Place, publisher, year, edition, pages
Piscataway, NJ: IEEE Communications Society, 2014. 970-974 p., 6862555
Research subject
Control Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-39356DOI: 10.1109/ECC.2014.6862555Local ID: e1089c23-0c06-46cd-8369-0e697e82062fISBN: 9783952426913 (PDF)OAI: oai:DiVA.org:ltu-39356DiVA: diva2:1012867
Conference
European Control Conference : 24/06/2014 - 27/06/2014
Note
Godkänd; 2014; 20140401 (tgu)Available from: 2016-10-03 Created: 2016-10-03Bibliographically approved

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Sayyaddelshad, SalehGustafsson, Thomas
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